After visiting the site I did a browser refresh as I wanted to see the number go up. However, it went down!. They're probably deleting the obviously bogus entries like "Mr Brown Out" I thought. Though, it did cause me to lurk some more.

12:37pm 46,51512:38pm 46,50712:43pm 46,49412:51pm 46,480

In that time I didn't see many daft names either. But Damien Pooley, John Pearcey, William John Hutchinson, Rory Jackson and Danielle Murdoch who were the five latest entries at 12:37pm weren't listed in the top 500 at 12:38pm. No doubt there is a good reason.

The five people that you mentioned as being in the top 500 at 12:37 but not at 12:38 are all in the list of names at 15:28, although not in the latest 500. If you click to show all signatories and then search for the names, they are all there in a block.

It is strange though that they have moved up the page when the number of signatories had decreased at the time you were talking about and is currently 46,775 -- not enough to have pushed them up the page without either deletions or reordering of names.